Course: Managing Big Data Module: MBD Semester: Repeat assignment Assignment Number: Assignment_2 Aris recovery Java Question 1 Build a Java application program to scan a recovery log using Aries...

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Course: Managing Big Data Module: MBD Semester: Repeat assignment Assignment Number: Assignment_2 Aris recovery Java Question 1 Build a Java application program to scan a recovery log using Aries algorithm and define the final state of the elements. The recovery log has the following structure, the manual solution is uploaded on moodle on how Aries recovery works in it is three stages, your program should load the log file (log.txt) and build the two table, Transactions Table and Dirty page table and reprocess the time to the end. LSN,PrevLSN, TransID,Operation,PageID,beforeValue,afterValue; You can ignore Offset and Length You need to submit only Java files , no Jars or project directories. Question 2 If 2PL ensures conflict-serializability, why do we need strict 2PL? Question 3 Consider the following schedule. Explain what happens when transactions try to execute as per this schedule and the DBMS uses timestamp-based concurrency control. We use ST to denote the start of a transaction, C for commit, and A for abort.